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Int J Emerg Med. 2010 March; 3(1): 63.
Published online 2010 February 27. doi:  10.1007/s12245-009-0145-4
PMCID: PMC2850986

Accidental tramline bruising and rib fractures

Description

A 37-year-old, 85-kg man fell from his bicycle landing on his left chest. Fractures of the fifth and sixth ribs were diagnosed clinically and with ultrasound. Bruising developed after a few days in a tramline, linear pattern with three stripes outlining the affected ribs (Figs. 1 and and2).2). Tramline bruising is often presumed to be caused by blows with a linear implement and in children would be considered suggestive of maltreatment [1].

Fig. 1
Three stripes outlining the affected ribs
Fig. 2
Ultrasound visualisation of fractures

In this case it is hypothesised that the linearity was caused by compression of the skin against the tarmac by the ribs from within, rather than by compression by a rod from without. It is likely that such a mechanism requires a body mass substantially greater than the average child’s, so although this case demonstrates that linear bruising in an adult is not pathognomonic of a blow with a rod-like implement, in children it will raise suspicion of maltreatment.

Footnotes

The views expressed in this paper are those of the author(s) and not those of the editors, editorial board or publisher.

Reference

1. When to suspect child maltreatment. London: RCOG Press; 2009.

Articles from International Journal of Emergency Medicine are provided here courtesy of Springer-Verlag